Okay well I saw on you tube some one attached there 3" down pipe to a sti catback on there 02wrx wagon I also have the same car and I have a 3" catless down pipe sitting in my trunk I just have the sti down pipe on now basically what im asking is any ideas on how to attach them are the flanges the same or is there some way to attach with a universal flange any info would help thank you I will post the video for you guys thank you